Plural valve arrangements

Claim 1

A PLURAL VALVE MECHANISM COMPRISING A PLURALITY OF SEPARATE VALVE MECHANISM UNITS, EACH OF SAID UNITS COMPRISING A VALVE BODY HAVING FORMED THEREIN A LONGITUDINALLY EXTENDING VALVE CAVITY AND THREE PARALLEL OPENINGS EXTENDING COMPLETELY THERETHROUGH TRANSVERSELY WITH RESPECT TO SAID CAVITY AND EACH COMMUNICATING WITH THE LATTER, SAID THREE OPENINGS CONSTITUTING HIGH PRESSURE, LOW PRESSURE AND WORKING PORTS, AND VALVE MEANS MOUNTED WITHIN SAID CAVITY FOR MOVEMENT INTO DIFFERENT POSITIONS TO CONTROL THE FLOW OF FLUID FROM SAID HIGH PRESSURE PORT TO SAID WORKING PORT AND FROM SAID WORKING PORT TO SAID LOW PRESSURE PORT; AND MEANS FOR CONNECTING SAID UNITS TOGETHER PROVIDING AN EXTERIOR OPENING FOR COMMUNICATION WITH A SOURCE OF HIGH PRESSURE FLUID AND PASSAGE MEANS FOR COMMUNICATING SAID OPENING WITH ALL OF THE HIGH PRESSURE PORTS OF SAID UNITS, AN EXTERIOR OPENING FOR COMMUNICATION WITH A SOURCE OF LOW PRESSURE FLUID AND PASSAGE MEANS FOR COMMUNICATING SAID LOW PRESSURE FLUID OPENING WITH ALL OF THE LOW PRESSURE PORTS OF SAID UNITS, AND PASSAGE MEANS COMMUNICATING WITH EACH WORKING PORT PROVIDING AN ASSOCIATED EXTERIOR OPENING FOR COMMUNICATION WITH A WORKING DEVICE.